3 * Denis Peter, MPL AG Switzerland
5 * SPDX-License-Identifier: GPL-2.0+
14 #ifdef CONFIG_SCSI_DEV_LIST
15 #define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
17 #ifdef CONFIG_SCSI_SYM53C8XX
18 #define SCSI_VEND_ID 0x1000
19 #ifndef CONFIG_SCSI_DEV_ID
20 #define SCSI_DEV_ID 0x0001
22 #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
24 #elif defined CONFIG_SATA_ULI5288
26 #define SCSI_VEND_ID 0x10b9
27 #define SCSI_DEV_ID 0x5288
29 #elif !defined(CONFIG_SCSI_AHCI_PLAT)
30 #error no scsi device defined
32 #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
35 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
36 const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
38 static ccb tempccb; /* temporary scsi command buffer */
40 static unsigned char tempbuff[512]; /* temporary data buffer */
42 static int scsi_max_devs; /* number of highest available scsi device */
44 static int scsi_curr_dev; /* current device */
46 static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
48 /* almost the maximum amount of the scsi_ext command.. */
49 #define SCSI_MAX_READ_BLK 0xFFFF
50 #define SCSI_LBA48_READ 0xFFFFFFF
52 #ifdef CONFIG_SYS_64BIT_LBA
53 void scsi_setup_read16(ccb *pccb, lbaint_t start, unsigned long blocks)
55 pccb->cmd[0] = SCSI_READ16;
56 pccb->cmd[1] = pccb->lun << 5;
57 pccb->cmd[2] = (unsigned char)(start >> 56) & 0xff;
58 pccb->cmd[3] = (unsigned char)(start >> 48) & 0xff;
59 pccb->cmd[4] = (unsigned char)(start >> 40) & 0xff;
60 pccb->cmd[5] = (unsigned char)(start >> 32) & 0xff;
61 pccb->cmd[6] = (unsigned char)(start >> 24) & 0xff;
62 pccb->cmd[7] = (unsigned char)(start >> 16) & 0xff;
63 pccb->cmd[8] = (unsigned char)(start >> 8) & 0xff;
64 pccb->cmd[9] = (unsigned char)start & 0xff;
66 pccb->cmd[11] = (unsigned char)(blocks >> 24) & 0xff;
67 pccb->cmd[12] = (unsigned char)(blocks >> 16) & 0xff;
68 pccb->cmd[13] = (unsigned char)(blocks >> 8) & 0xff;
69 pccb->cmd[14] = (unsigned char)blocks & 0xff;
72 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
73 debug("scsi_setup_read16: cmd: %02X %02X startblk %02X%02X%02X%02X%02X%02X%02X%02X blccnt %02X%02X%02X%02X\n",
74 pccb->cmd[0], pccb->cmd[1],
75 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
76 pccb->cmd[6], pccb->cmd[7], pccb->cmd[8], pccb->cmd[9],
77 pccb->cmd[11], pccb->cmd[12], pccb->cmd[13], pccb->cmd[14]);
81 void scsi_setup_read_ext(ccb *pccb, lbaint_t start, unsigned short blocks)
83 pccb->cmd[0] = SCSI_READ10;
84 pccb->cmd[1] = pccb->lun << 5;
85 pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
86 pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
87 pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
88 pccb->cmd[5] = (unsigned char)start & 0xff;
90 pccb->cmd[7] = (unsigned char)(blocks >> 8) & 0xff;
91 pccb->cmd[8] = (unsigned char)blocks & 0xff;
94 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
95 debug("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
96 pccb->cmd[0], pccb->cmd[1],
97 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
98 pccb->cmd[7], pccb->cmd[8]);
101 void scsi_setup_write_ext(ccb *pccb, lbaint_t start, unsigned short blocks)
103 pccb->cmd[0] = SCSI_WRITE10;
104 pccb->cmd[1] = pccb->lun << 5;
105 pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
106 pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
107 pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
108 pccb->cmd[5] = (unsigned char)start & 0xff;
110 pccb->cmd[7] = ((unsigned char)(blocks >> 8)) & 0xff;
111 pccb->cmd[8] = (unsigned char)blocks & 0xff;
114 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
115 debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
117 pccb->cmd[0], pccb->cmd[1],
118 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
119 pccb->cmd[7], pccb->cmd[8]);
122 void scsi_setup_read6(ccb *pccb, lbaint_t start, unsigned short blocks)
124 pccb->cmd[0] = SCSI_READ6;
125 pccb->cmd[1] = pccb->lun << 5 | ((unsigned char)(start >> 16) & 0x1f);
126 pccb->cmd[2] = (unsigned char)(start >> 8) & 0xff;
127 pccb->cmd[3] = (unsigned char)start & 0xff;
128 pccb->cmd[4] = (unsigned char)blocks & 0xff;
131 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
132 debug("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
133 pccb->cmd[0], pccb->cmd[1],
134 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4]);
138 void scsi_setup_inquiry(ccb *pccb)
140 pccb->cmd[0] = SCSI_INQUIRY;
141 pccb->cmd[1] = pccb->lun << 5;
144 if (pccb->datalen > 255)
147 pccb->cmd[4] = (unsigned char)pccb->datalen;
150 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
154 static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
157 static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
158 lbaint_t blkcnt, void *buffer)
162 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
164 lbaint_t start, blks;
166 unsigned short smallblks = 0;
167 ccb *pccb = (ccb *)&tempccb;
170 pccb->target = block_dev->target;
171 pccb->lun = block_dev->lun;
172 buf_addr = (unsigned long)buffer;
175 debug("\nscsi_read: dev %d startblk " LBAF
176 ", blccnt " LBAF " buffer %lx\n",
177 block_dev->devnum, start, blks, (unsigned long)buffer);
179 pccb->pdata = (unsigned char *)buf_addr;
180 #ifdef CONFIG_SYS_64BIT_LBA
181 if (start > SCSI_LBA48_READ) {
182 unsigned long blocks;
183 blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK);
184 pccb->datalen = block_dev->blksz * blocks;
185 scsi_setup_read16(pccb, start, blocks);
190 if (blks > SCSI_MAX_READ_BLK) {
191 pccb->datalen = block_dev->blksz *
193 smallblks = SCSI_MAX_READ_BLK;
194 scsi_setup_read_ext(pccb, start, smallblks);
195 start += SCSI_MAX_READ_BLK;
196 blks -= SCSI_MAX_READ_BLK;
198 pccb->datalen = block_dev->blksz * blks;
199 smallblks = (unsigned short)blks;
200 scsi_setup_read_ext(pccb, start, smallblks);
204 debug("scsi_read_ext: startblk " LBAF
205 ", blccnt %x buffer %" PRIXPTR "\n",
206 start, smallblks, buf_addr);
207 if (scsi_exec(pccb) != true) {
208 scsi_print_error(pccb);
212 buf_addr += pccb->datalen;
214 debug("scsi_read_ext: end startblk " LBAF
215 ", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr);
219 /*******************************************************************************
223 /* Almost the maximum amount of the scsi_ext command.. */
224 #define SCSI_MAX_WRITE_BLK 0xFFFF
227 static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
230 static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
231 lbaint_t blkcnt, const void *buffer)
235 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
237 lbaint_t start, blks;
239 unsigned short smallblks;
240 ccb *pccb = (ccb *)&tempccb;
243 pccb->target = block_dev->target;
244 pccb->lun = block_dev->lun;
245 buf_addr = (unsigned long)buffer;
248 debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
249 __func__, block_dev->devnum, start, blks, (unsigned long)buffer);
251 pccb->pdata = (unsigned char *)buf_addr;
252 if (blks > SCSI_MAX_WRITE_BLK) {
253 pccb->datalen = (block_dev->blksz *
255 smallblks = SCSI_MAX_WRITE_BLK;
256 scsi_setup_write_ext(pccb, start, smallblks);
257 start += SCSI_MAX_WRITE_BLK;
258 blks -= SCSI_MAX_WRITE_BLK;
260 pccb->datalen = block_dev->blksz * blks;
261 smallblks = (unsigned short)blks;
262 scsi_setup_write_ext(pccb, start, smallblks);
266 debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
267 __func__, start, smallblks, buf_addr);
268 if (scsi_exec(pccb) != true) {
269 scsi_print_error(pccb);
273 buf_addr += pccb->datalen;
275 debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
276 __func__, start, smallblks, buf_addr);
280 int scsi_get_disk_count(void)
282 return scsi_max_devs;
285 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
291 * Find a device from the list, this driver will support a single
294 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
295 /* get PCI Device ID */
300 ret = dm_pci_find_device(scsi_device_list[i].vendor,
301 scsi_device_list[i].device, 0, &dev);
303 busdevfunc = dm_pci_get_bdf(dev);
307 busdevfunc = pci_find_device(scsi_device_list[i].vendor,
308 scsi_device_list[i].device,
311 if (busdevfunc != -1)
315 if (busdevfunc == -1) {
316 printf("Error: SCSI Controller(s) ");
317 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
319 scsi_device_list[i].vendor,
320 scsi_device_list[i].device);
322 printf("not found\n");
327 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
328 scsi_device_list[i].vendor,
329 scsi_device_list[i].device,
330 (busdevfunc >> 16) & 0xFF,
331 (busdevfunc >> 11) & 0x1F,
332 (busdevfunc >> 8) & 0x7);
335 bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
336 scsi_low_level_init(busdevfunc);
338 bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
342 /* copy src to dest, skipping leading and trailing blanks
343 * and null terminate the string
345 void scsi_ident_cpy(unsigned char *dest, unsigned char *src, unsigned int len)
350 while (start < len) {
351 if (src[start] != ' ')
356 while (end > start) {
361 for (; start <= end; start++)
362 *dest ++= src[start];
367 /* Trim trailing blanks, and NUL-terminate string
369 void scsi_trim_trail(unsigned char *str, unsigned int len)
371 unsigned char *p = str + len - 1;
380 int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
384 memset(pccb->cmd, '\0', sizeof(pccb->cmd));
385 pccb->cmd[0] = SCSI_RD_CAPAC10;
386 pccb->cmd[1] = pccb->lun << 5;
388 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
391 if (scsi_exec(pccb) != true)
394 *capacity = ((lbaint_t)pccb->pdata[0] << 24) |
395 ((lbaint_t)pccb->pdata[1] << 16) |
396 ((lbaint_t)pccb->pdata[2] << 8) |
397 ((lbaint_t)pccb->pdata[3]);
399 if (*capacity != 0xffffffff) {
400 /* Read capacity (10) was sufficient for this drive. */
401 *blksz = ((unsigned long)pccb->pdata[4] << 24) |
402 ((unsigned long)pccb->pdata[5] << 16) |
403 ((unsigned long)pccb->pdata[6] << 8) |
404 ((unsigned long)pccb->pdata[7]);
408 /* Read capacity (10) was insufficient. Use read capacity (16). */
409 memset(pccb->cmd, '\0', sizeof(pccb->cmd));
410 pccb->cmd[0] = SCSI_RD_CAPAC16;
413 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
416 if (scsi_exec(pccb) != true)
419 *capacity = ((uint64_t)pccb->pdata[0] << 56) |
420 ((uint64_t)pccb->pdata[1] << 48) |
421 ((uint64_t)pccb->pdata[2] << 40) |
422 ((uint64_t)pccb->pdata[3] << 32) |
423 ((uint64_t)pccb->pdata[4] << 24) |
424 ((uint64_t)pccb->pdata[5] << 16) |
425 ((uint64_t)pccb->pdata[6] << 8) |
426 ((uint64_t)pccb->pdata[7]);
428 *blksz = ((uint64_t)pccb->pdata[8] << 56) |
429 ((uint64_t)pccb->pdata[9] << 48) |
430 ((uint64_t)pccb->pdata[10] << 40) |
431 ((uint64_t)pccb->pdata[11] << 32) |
432 ((uint64_t)pccb->pdata[12] << 24) |
433 ((uint64_t)pccb->pdata[13] << 16) |
434 ((uint64_t)pccb->pdata[14] << 8) |
435 ((uint64_t)pccb->pdata[15]);
442 * Some setup (fill-in) routines
444 void scsi_setup_test_unit_ready(ccb *pccb)
446 pccb->cmd[0] = SCSI_TST_U_RDY;
447 pccb->cmd[1] = pccb->lun << 5;
453 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
456 static void scsi_init_dev_desc(struct blk_desc *dev_desc, int devnum)
458 dev_desc->target = 0xff;
459 dev_desc->lun = 0xff;
462 dev_desc->log2blksz =
463 LOG2_INVALID(typeof(dev_desc->log2blksz));
464 dev_desc->type = DEV_TYPE_UNKNOWN;
465 dev_desc->vendor[0] = 0;
466 dev_desc->product[0] = 0;
467 dev_desc->revision[0] = 0;
468 dev_desc->removable = false;
469 dev_desc->if_type = IF_TYPE_SCSI;
470 dev_desc->devnum = devnum;
471 dev_desc->part_type = PART_TYPE_UNKNOWN;
473 dev_desc->block_read = scsi_read;
474 dev_desc->block_write = scsi_write;
480 * scsi_detect_dev - Detect scsi device
483 * @dev_desc: block device description
485 * The scsi_detect_dev detects and fills a dev_desc structure when the device is
486 * detected. The LUN number is taken from the struct blk_desc *dev_desc.
488 * Return: 0 on success, error value otherwise
490 static int scsi_detect_dev(int target, struct blk_desc *dev_desc)
492 unsigned char perq, modi;
495 ccb *pccb = (ccb *)&tempccb;
497 pccb->target = target;
498 pccb->lun = dev_desc->lun;
499 pccb->pdata = (unsigned char *)&tempbuff;
501 scsi_setup_inquiry(pccb);
502 if (scsi_exec(pccb) != true) {
503 if (pccb->contr_stat == SCSI_SEL_TIME_OUT) {
505 * selection timeout => assuming no
508 debug("Selection timeout ID %d\n",
512 scsi_print_error(pccb);
517 if ((perq & 0x1f) == 0x1f)
518 return -ENODEV; /* skip unknown devices */
519 if ((modi & 0x80) == 0x80) /* drive is removable */
520 dev_desc->removable = true;
521 /* get info for this device */
522 scsi_ident_cpy((unsigned char *)dev_desc->vendor,
524 scsi_ident_cpy((unsigned char *)dev_desc->product,
526 scsi_ident_cpy((unsigned char *)dev_desc->revision,
528 dev_desc->target = pccb->target;
529 dev_desc->lun = pccb->lun;
532 scsi_setup_test_unit_ready(pccb);
533 if (scsi_exec(pccb) != true) {
534 if (dev_desc->removable) {
535 dev_desc->type = perq;
538 scsi_print_error(pccb);
541 if (scsi_read_capacity(pccb, &capacity, &blksz)) {
542 scsi_print_error(pccb);
545 dev_desc->lba = capacity;
546 dev_desc->blksz = blksz;
547 dev_desc->log2blksz = LOG2(dev_desc->blksz);
548 dev_desc->type = perq;
549 part_init(&dev_desc[0]);
555 * (re)-scan the scsi bus and reports scsi device info
556 * to the user if mode = 1
558 void scsi_scan(int mode)
560 unsigned char i, lun;
564 printf("scanning bus for devices...\n");
565 for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++)
566 scsi_init_dev_desc(&scsi_dev_desc[i], i);
569 for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
570 for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) {
571 scsi_dev_desc[scsi_max_devs].lun = lun;
572 ret = scsi_detect_dev(i, &scsi_dev_desc[scsi_max_devs]);
577 printf(" Device %d: ", 0);
578 dev_print(&scsi_dev_desc[scsi_max_devs]);
583 if (scsi_max_devs > 0)
588 printf("Found %d device(s).\n", scsi_max_devs);
589 #ifndef CONFIG_SPL_BUILD
590 setenv_ulong("scsidevs", scsi_max_devs);
595 static const struct blk_ops scsi_blk_ops = {
600 U_BOOT_DRIVER(scsi_blk) = {
603 .ops = &scsi_blk_ops,
606 U_BOOT_LEGACY_BLK(scsi) = {
607 .if_typename = "scsi",
608 .if_type = IF_TYPE_SCSI,
609 .max_devs = CONFIG_SYS_SCSI_MAX_DEVICE,
610 .desc = scsi_dev_desc,